That layering tells a quiet story: a structure raised perhaps a thousand or more years ago, its original purpose long since passed, conscripted into the everyday geometry of post-medieval farming and still serving, in a modified form, as a boundary today.

The enclosure is a cashel, meaning a ringfort defined by a drystone wall rather than an earthen bank, a construction technique well suited to the stone-rich landscapes of the west of Ireland. This particular example is subcircular in plan, measuring roughly 30.6 metres east to west and 25.6 metres north to south. Its condition is described as fair, with the original drystone fabric surviving beneath the more recent stonework laid over it. A gap on the north-north-east side appears to be a modern break rather than an original entrance. Cashels of this kind were typically used as defended farmstead enclosures during the early medieval period, housing a family and their livestock within a walled circuit. What makes the Rusheeny site especially worth noting is that it does not stand alone: a second cashel lies close by to the south, suggesting this part of the hillside supported more than one enclosed settlement, possibly at the same period or in successive generations of occupation.